Chemical properties of the Bi-based superconducting whiskers studied by X-ray photoelectron spectroscopy

被引：1
|
作者：
Tanaka, H
Okabe, M
Kishida, S
Yoshikawa, H
Kimura, M
Tanaka, A
Fukushima, S
Ando, K
机构：
[1] Tottori Univ, Dept Elect & Elect Engn, Tottori 6808552, Japan
[2] Natl Inst Mat Sci, Harima Off, Adv Mat Lab, Mikazuki, Sayo Hyogo 6795143, Japan
[3] PHI Inc, ULVAC, Chigasaki, Kanagawa 2530084, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 412卷
关键词：
Bi2Sr2Can-1CunOy; whisker; a method of an Al2O3; -seeded glassy quenched platelets (ASGQP); X-ray photoelectron spectroscopy; surface cleaning;
D O I：
10.1016/j.physc.2003.11.073
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigated the chemical bond nature of the constituent elements in the surface of the as-grown Bi2Sr2Can-1CunOy (Bi-based) superconducting whiskers by a high-resolution X-ray photoelectron spectroscopy. From the results, we found that lots of the impurities, e.g. carbon, hydroxyl and so on were adsorbed or absorbed on the surface of the as-grown whiskers. Moreover, the valence of the Cu in CuO2 plane which is important for superconductivity has changed from divalent to less than divalent, which leads to the existence of the insulating layers in the surface of the Bi-based superconducting whiskers. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：279 / 282
页数：4
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